# iNC-Mill: CNC G-Code Simulator — NC Editor & 3D Toolpaths

> Portable CNC workstation for NC/G-code editing, simulation, and process calculations. (iPhone/iPad app by 乐勇 刘.)

- Source: https://appshunter.io/ios/app/inc-mill-cnc-g-code-simulator/id6755829129 (this page in markdown: same URL + `.md`)
- Developer: [乐勇 刘](https://appshunter.io/developer/1856258038)
- Category: Utilities, Reference
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 16.0 · 146 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Russian, Chinese (Simplified, China), European Spanish and 1 more
- Released: 2025-12-02
- Data updated: 2026-10-24
- Monetization: freemium

## What is iNC?

Edit NC/G-code, review 3D toolpaths, inspect stock removal and view STEP/STL models on iPhone and iPad. iNC-Mill brings programs, toolpaths and part geometry into one workspace for shop-floor review, programming practice and teaching.

File management and basic 3D viewing are free. NC editing, simulation, knowledge references, calculators, advanced 3D tools and settings, and AI questions require an active subscription.

NC/G-CODE EDITING
• Import NC programs from Files, AirDrop or other apps
• Edit with syntax highlighting, line navigation, search and replace
• Renumber or remove N block numbers in selected lines or an entire file
• Review very large programs in a dedicated read-only mode

MILLING, TURNING AND MACROS
• Watch stock material removal during 3-axis milling and turning playback
• Inspect 3-axis and 5-axis toolpaths with distinct rapid, feed and arc motion
• Trace FANUC macro execution flow and machine state
• Work with Mitsubishi M800/M80 milling and turning programs, with matching command references, parameter forms and examples
• Review macros, subprograms and canned cycles within the supported scope of the selected controller

CODE BESIDE TOOLPATHS
• Compare 3D toolpaths with read-only NC code in resizable Machining-mode panes
• Follow associated source lines and available tool, feed, spindle and position readouts
• Navigate by move, Z change, cutting section or tool section
• Play forward or in reverse; adjust speed, path colors and viewing direction
• Keep the camera and playback position when switching preview modes

STEP/STL MODEL VIEWING
• Open STP/STEP and STL files; rotate, zoom and use standard views
• Explore STEP assembly trees, hide or isolate components, and adjust exploded views
• Inspect internal geometry with interactive section planes
• Measure supported STEP geometry: distances, radii, angles, areas and model dimensions
• Measure between toolpath points and visible simulated workpiece surfaces

Model viewing is read-only. STEP measurements use supported CAD geometry; STL and simulated workpiece measurements are mesh-based approximations. Toolpath curves use generated segments. Measurements do not certify physical part dimensions.

FILES AND MACHINING TOOLS
• Create, import, search and organize files; reopen recent files
• Move files and folders in batches and restore Recently Deleted items
• Manage machine and tool definitions; browse G/M-code references
• Use milling, turning and quick calculators

ON-DEVICE WORKFLOW
Core NC editing, parsing, model viewing, toolpath review and simulation run on device. These tools do not require uploading your machining files.

iNC-Mill supports program review and visualization. Professional verification, collision checks and machine, tooling and fixture checks remain necessary before machining.

SUBSCRIPTIONS
Monthly and yearly plans, prices and any available trial are shown in the App Store at purchase time. Payment is charged to your Apple ID after confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel in Settings > Apple ID > Subscriptions.

Terms of Use:
https://inc-mill.com/en/terms

Privacy Policy:
https://inc-mill.com/en/privacy

## Key features

- Smart NC/G-code editing
- CNC simulation
- Process calculators
- 3D toolpath viewer
- Local-first file processing
- Large program handling

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Subscribe Monthly | $1.99 | per month |
| Subscribe Yearly | $17.99 | per year |


## Is iNC safe?

Not enough ratings yet to assess iNC.

## Is iNC legit?

iNC-Mill: CNC G-Code Simulator appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for iNC is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Frequently asked questions about iNC

### What is iNC-Mill?

iNC-Mill is a mobile application designed to function as a portable CNC workstation. It integrates smart NC/G-code editing, CNC simulation, and process calculators, allowing users to manage machining programs directly on their iPhone or iPad.

### Does iNC-Mill have ads?

No, iNC-Mill does not contain advertisements. The application is designed with a focus on engineer-friendliness and a clean user interface, ensuring an uninterrupted experience for users.

### How does iNC-Mill handle user data and privacy?

iNC-Mill operates on a local-first principle, meaning all parsing and rendering occur on the device. Machining content is not uploaded, and NC programs are not used for ads or profiling. Anonymous crash reporting is optional and does not include NC file contents.

### What are the subscription options for iNC-Mill?

iNC-Mill offers both monthly and yearly subscription plans, each including a 7-day free trial. The monthly subscription is $1.99, and the yearly subscription is $17.99. Full features are available during the subscription period.

### How can I cancel my iNC-Mill subscription or free trial?

Subscriptions and free trials can be managed or canceled within your device's settings. Navigate to Settings > Apple ID > Subscriptions. It's important to cancel at least 24 hours before the end of the current period to avoid automatic renewal.

### What file formats does iNC-Mill support for NC programs?

iNC-Mill supports common NC program file formats, including .nc, .txt, and .gcode. The application is optimized for loading and browsing even very large programs, making it suitable for extensive CAM-generated files.

### Can iNC-Mill be used offline?

Yes, iNC-Mill is designed for confidential machining and works without an internet connection. Files are processed on the device, eliminating cloud dependency and ensuring usability in environments without reliable internet access.

### What are the age restrictions for iNC-Mill?

iNC-Mill has an age rating of 4+. This indicates that the content is generally suitable for all ages, with no mature themes or potentially disturbing material.

## Version history (last 5 releases)

### 1.0.21 — 2026-10-23

1.0.21: Mitsubishi program support and improved subprogram and turning simulation.

• Added Mitsubishi M800/M80 milling and turning program support, with command references, parameter forms and examples.
• Improved FANUC and Mitsubishi subprogram lookup across multi-program files and external files, including nested calls and error locations.
• Refined Mitsubishi G71/G72 roughing cycles and tool retraction.
• Improved lathe stock-contour updates during playback to better match cutting progress.
• Improved initial framing of lathe previews while preserving the camera view during playback.

### 1.0.20 — 2026-10-21

1.0.20: Clearer program review and more consistent cutting previews.

• Cutting previews now use the currently displayed toolpath for more consistent stock visualization.
• Improved machining readouts and navigation between main-program and subprogram source lines.
• Refined simulation stop controls and confirmation before actions that end a run.
• Updated CNC reference content and command forms across all ten app languages.
• Improved preview memory handling, scene interaction and sample-file opening.
• Improved subscription price loading and paid-access refresh after slow or interrupted responses.

### 1.0.19 — 2026-10-05

1.0.19: Easier file organization, clearer kernel version details.

• Settings now lists the app, CNC kernel and CAD kernel versions separately, making it easier to check which versions you are using.
• Create files and folders or import files directly into the current folder. The library root also supports files, and completed operations can reveal the resulting files.
• Find machining files with filename search, sorting by name, creation date or modification date, and recently opened history.
• Clearer project labels, relative paths, folder item counts and configuration scope help you navigate your workspace and project files.
• Select multiple files and folders to move or delete them together. Browse folder levels to choose a move destination, and restore deleted items from Recently Deleted.
• Improved import progress and results, duplicate-name handling, and path updates after renaming or moving. Better protection against deleting files with unsaved edits, plus fixes for folder navigation and opening search results.

### 1.0.18 — 2026-09-30

1.0.18: Choose the 3D preview that fits your task.

• NC previews now offer Standard, Machining and View modes. STEP/STP and STL models support Standard and View.
• New Machining mode pairs 3D toolpaths with read-only NC code in one workspace. Resize stacked or side-by-side panes to fit the available space. Browse syntax-colored code with fixed line numbers and navigate linked source lines where available.
• A compact machining summary and expandable details show available tool, feed, spindle, position and other information alongside the toolpath.
• New View mode hides the top navigation, bottom tab bar and information panels for a larger 3D viewing area, while keeping scene tools available. Switching modes preserves the camera and playback position; return to Standard at any time.
• Refined NC input, scrolling, syntax highlighting, search and replace for longer programs. Fixed missed actions during rapid single replacements.
• Long-press N to renumber or remove block numbers in selected lines or the whole file, with an affected-line count before applying. Confirm the match count before Replace All. Improved caret, selection and scroll-position retention after batch edits, cutting and undo.
• Code assistance and knowledge references support all ten app languages, with improved reference matching for different controllers.
• Restored sidebar access to milling, turning and quick calculators, available with an active subscription.
• Fixed parsing of some G41/G42 cutter-compensated arcs and improved toolpath continuity.

### 1.0.17 — 2026-09-26

1.0.17: A smoother NC editing experience.

• Improved typing, scrolling, syntax highlighting, search, and replace, with better responsiveness when editing longer programs.
• New N block-number tools: long-press N in the keyboard toolbar to renumber or remove numbers from selected lines or the whole file, with an affected-line count before applying.
• Replace All now shows the current match count for confirmation. Fixed missed actions during rapid single replacements.
• Improved caret, selection, and scroll-position handling after batch edits, cutting text, and undo.
• Code assistance and the knowledge base now support all ten app languages, with improved reference matching for different controllers.
• Fixed parsing of some arcs with G41/G42 cutter radius compensation to improve toolpath continuity.

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All apps by 乐勇 刘: https://appshunter.io/developer/1856258038

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*